Commit d420ac2c authored by Richard Levitte's avatar Richard Levitte
Browse files

Use BUF_strlcpy() instead of strcpy(). 

Use BUF_strlcat() instead of strcat().
Use BIO_snprintf() instead of sprintf().
In some cases, keep better track of buffer lengths.
This is part of a large change submitted by Markus Friedl <markus@openbsd.org>
parent b79aa47a

apps/apps.c

+6 −4
Original line number Diff line number Diff line
@@ -1396,14 +1396,16 @@ int load_config(BIO *err, CONF *cnf) 
char *make_config_name()

	{

	const char *t=X509_get_default_cert_area();

	size_t len;

	char *p;



	p=OPENSSL_malloc(strlen(t)+strlen(OPENSSL_CONF)+2);

	strcpy(p,t);

	len=strlen(t)+strlen(OPENSSL_CONF)+2;

	p=OPENSSL_malloc(len);

	BUF_strlcpy(p,t,len);

#ifndef OPENSSL_SYS_VMS

	strcat(p,"/");

	BUF_strlcat(p,"/",len);

#endif

	strcat(p,OPENSSL_CONF);

	BUF_strlcat(p,OPENSSL_CONF,len);



	return p;

	}

apps/ca.c

+23 −16
Original line number Diff line number Diff line
@@ -557,16 +557,19 @@ bad: 
	if (configfile == NULL)

		{

		const char *s=X509_get_default_cert_area();

		size_t len;



#ifdef OPENSSL_SYS_VMS

		tofree=OPENSSL_malloc(strlen(s)+sizeof(CONFIG_FILE));

		len = strlen(s)+sizeof(CONFIG_FILE);

		tofree=OPENSSL_malloc(len);

		strcpy(tofree,s);

#else

		tofree=OPENSSL_malloc(strlen(s)+sizeof(CONFIG_FILE)+1);

		strcpy(tofree,s);

		strcat(tofree,"/");

		len = strlen(s)+sizeof(CONFIG_FILE)+1;

		tofree=OPENSSL_malloc(len);

		BUF_strlcpy(tofree,s,len);

		BUF_strlcat(tofree,"/",len);

#endif

		strcat(tofree,CONFIG_FILE);

		BUF_strlcat(tofree,CONFIG_FILE,len);

		configfile=tofree;

		}
@@ -1236,7 +1239,7 @@ bad: 
		for (i=0; i<sk_X509_num(cert_sk); i++)

			{

			int k;

			unsigned char *n;

			char *n;



			x=sk_X509_value(cert_sk,i);
@@ -1252,15 +1255,19 @@ bad: 
			strcpy(buf[2],outdir);



#ifndef OPENSSL_SYS_VMS

			strcat(buf[2],"/");

			BUF_strlcat(buf[2],"/",sizeof(buf[2]));

#endif



			n=(unsigned char *)&(buf[2][strlen(buf[2])]);

			n=(char *)&(buf[2][strlen(buf[2])]);

			if (j > 0)

				{

				for (k=0; k<j; k++)

					{

					sprintf((char *)n,"%02X",(unsigned char)*(p++));

					if (n >= &(buf[2][sizeof(buf[2])]))

						break;

					BIO_snprintf(n,

						     &buf[2][0] + sizeof(buf[2]) - n,

						     "%02X",(unsigned char)*(p++));

					n+=2;

					}

				}
@@ -2127,7 +2134,7 @@ again2: 
		BIO_printf(bio_err,"Memory allocation failure\n");

		goto err;

		}

	strcpy(row[DB_file],"unknown");

	BUF_strlcpy(row[DB_file],"unknown",8);

	row[DB_type][0]='V';

	row[DB_type][1]='\0';
@@ -2428,7 +2435,7 @@ static int do_revoke(X509 *x509, CA_DB *db, int type, char *value) 
			BIO_printf(bio_err,"Memory allocation failure\n");

			goto err;

			}

		strcpy(row[DB_file],"unknown");

		BUF_strlcpy(row[DB_file],"unknown",8);

		row[DB_type][0]='V';

		row[DB_type][1]='\0';
@@ -2752,16 +2759,16 @@ char *make_revocation_str(int rev_type, char *rev_arg) 


	if (!str) return NULL;



	strcpy(str, (char *)revtm->data);

	BUF_strlcpy(str, (char *)revtm->data, i);

	if (reason)

		{

		strcat(str, ",");

		strcat(str, reason);

		BUF_strlcat(str, ",", i);

		BUF_strlcat(str, reason, i);

		}

	if (other)

		{

		strcat(str, ",");

		strcat(str, other);

		BUF_strlcat(str, ",", i);

		BUF_strlcat(str, other, i);

		}

	ASN1_UTCTIME_free(revtm);

	return str;

apps/dgst.c

+3 −2
Original line number Diff line number Diff line
@@ -347,8 +347,9 @@ int MAIN(int argc, char **argv) 
				}

			if(!out_bin)

				{

				tmp=tofree=OPENSSL_malloc(strlen(name)+strlen(argv[i])+5);

				sprintf(tmp,"%s(%s)= ",name,argv[i]);

				size_t len = strlen(name)+strlen(argv[i])+5;

				tmp=tofree=OPENSSL_malloc(len);

				BIO_snprintf(tmp,len,"%s(%s)= ",name,argv[i]);

				}

			else

				tmp="";

apps/enc.c

+3 −3
Original line number Diff line number Diff line
@@ -373,7 +373,7 @@ bad: 
			{

			char buf[200];



			sprintf(buf,"enter %s %s password:",

			BIO_snprintf(buf,sizeof buf,"enter %s %s password:",

				     OBJ_nid2ln(EVP_CIPHER_nid(cipher)),

				     (enc)?"encryption":"decryption");

			strbuf[0]='\0';

apps/engine.c

+2 −2
Original line number Diff line number Diff line
@@ -123,8 +123,8 @@ static int append_buf(char **buf, const char *s, int *size, int step) 
		return 0;



	if (**buf != '\0')

		strcat(*buf, ", ");

	strcat(*buf, s);

		BUF_strlcat(*buf, ", ", *size);

	BUF_strlcat(*buf, s, *size);



	return 1;

	}